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horsena [70]
2 years ago
9

How long would a sample of 26g of Nickel-63 take to decay down to

Chemistry
1 answer:
cupoosta [38]2 years ago
4 0
I looked up the half life for nickel-63 and then used the half life formula which is No=Nt*e^(kt) so the final answer is 20000 years for 26g of nickel-63 to decay to 6.5g

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When Iron (III) Choride is added to a solution of synthesized aspirin what is the method of detection
zubka84 [21]

Answer:

seeing the color change

Explanation:

3 0
3 years ago
What is the molarity of a solution containing 23 g of NaCl in 500 mL of solution?
trapecia [35]

molarity of a solution means mols per liter.

First, you need to convert 23 grams on NaCl into mols. 23g divided by molar mass (58.44g/mol) which gives you .394 mols.

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7 0
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How could an increase in industrial activity in developing nations contribute to global climate change?
netineya [11]
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6 0
3 years ago
N2O5 decomposes to form NO2 and O2 with first-order kinetics. The initial concentration of N2O5 is 3.0 M and the reaction runs f
kow [346]

Answer : The final concentration of N_2O_5 is, 2.9 M

Explanation :

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 5.89\times 10^{-3}\text{ min}^{-1}

t = time passed by the sample  = 3.5 min

a = initial concentration of the reactant  = 3.0 M

a - x = concentration left after decay process = ?

Now put all the given values in above equation, we get

3.5=\frac{2.303}{5.89\times 10^{-3}}\log\frac{3.0}{a-x}

a-x=2.9M

Thus, the final concentration of N_2O_5 is, 2.9 M

3 0
3 years ago
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Anastasy [175]

Answer:

Homogenous mixture

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6 0
3 years ago
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